diff --git a/addons/im_livechat/static/src/js/models/website_livechat.js b/addons/im_livechat/static/src/js/models/website_livechat.js
index faae45feac5..46652f25713 100644
--- a/addons/im_livechat/static/src/js/models/website_livechat.js
+++ b/addons/im_livechat/static/src/js/models/website_livechat.js
@@ -17,7 +17,6 @@ var WebsiteLivechat = AbstractThread.extend(ThreadTypingMixin, {
      * @private
      * @param {Object} params
      * @param {Object} params.data
-     * @param {string} params.data.anonymous_name
      * @param {boolean} [params.data.folded] states whether the livechat is
      *   folded or not. It is considered only if this is defined and it is a
      *   boolean.
diff --git a/addons/im_livechat/static/src/js/models/website_livechat_message.js b/addons/im_livechat/static/src/js/models/website_livechat_message.js
index 9728c78e270..0c2738f01ac 100644
--- a/addons/im_livechat/static/src/js/models/website_livechat_message.js
+++ b/addons/im_livechat/static/src/js/models/website_livechat_message.js
@@ -16,6 +16,7 @@ var WebsiteLivechatMessage =  AbstractMessage.extend({
      * @param {im_livechat.im_livechat.LivechatButton} parent
      * @param {Object} data
      * @param {Object} options
+     * @param {string} options.default_username
      * @param {string} options.serverURL
      */
     init: function (parent, data, options) {
diff --git a/addons/mail/static/src/xml/thread_window.xml b/addons/mail/static/src/xml/thread_window.xml
index 2b552b44570..4164bc0abc9 100644
--- a/addons/mail/static/src/xml/thread_window.xml
+++ b/addons/mail/static/src/xml/thread_window.xml
@@ -18,7 +18,7 @@
     -->
     <t t-extend="mail.AbstractThreadWindow.HeaderContent">
         <t t-jquery=".o_thread_window_buttons" t-operation="prepend">
-            <a href="#" class="o_thread_window_expand fa fa-expand" t-att-title="expandTitle" t-att-aira-label="expandTitle"/>
+            <a href="#" class="o_thread_window_expand fa fa-expand" t-att-title="expandTitle" t-att-aria-label="expandTitle"/>
         </t>
     </t>